1. What is Battery Capacity?

Battery capacity represents the total amount of energy a battery can store and deliver. It is typically measured in watt-hours (Wh), which indicates how many watts the battery can supply for one hour.

2. How Does the Calculator Work?

The calculator uses the battery capacity formula:

Where:

• \( Ah \) — Amp-hours, the battery's charge capacity
• \( V \) — Voltage, the electrical potential difference
• \( Wh \) — Watt-hours, the energy capacity

Explanation: This formula converts the battery's charge capacity (Ah) into energy capacity (Wh) by multiplying with the operating voltage.

3. Importance of Battery Capacity Calculation

Details: Calculating battery capacity is essential for determining how long a battery will last powering a device, sizing batteries for solar systems, and comparing different battery technologies.

4. Using the Calculator

Tips: Enter the battery's amp-hour rating and nominal voltage. Both values must be positive numbers. The calculator will compute the energy capacity in watt-hours.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Ah and Wh?
A: Amp-hours (Ah) measure charge capacity, while watt-hours (Wh) measure energy capacity. Wh provides a more accurate comparison across different battery voltages.

Q2: Why is voltage important in capacity calculation?
A: Voltage determines the energy per unit charge. Higher voltage batteries deliver more energy for the same amount of charge (Ah).

Q3: How do I find my battery's Ah rating?
A: The Ah rating is typically printed on the battery label or available in the product specifications from the manufacturer.

Q4: Can I use this for all battery types?
A: Yes, this formula works for lead-acid, lithium-ion, NiMH, and other battery types as long as you know the nominal voltage and Ah rating.

Q5: How does temperature affect battery capacity?
A: Extreme temperatures can significantly reduce actual battery capacity. Most ratings are given at standard room temperature (20-25°C).